It is rarely ever relaxing to hear an injector noise on your Volkswagen CC. It is a noise that happens regularly, usually when you accelerate or your engine is idling. However, this sign may be relating to multiple kind of trouble with your car injectors. It may not be anything serious, but when a persistent noise comes out, you have to be sure. Most importantly since replacing your Volkswagen CC’s injectors can be costly. That’s why our team decided to prepare this article in order to support you see more clearly, learn about the different plausible failures and establish your trouble. To do this, we will first look at the normal function and usefulness of the injectors in your Volkswagen CC, then at the plausible reasons from which an injector noise may come.
Benefits of the injectors
Injectors are a very vital part of the operation of your engine. They were released to the modern vehicles about 20 years ago. Before their appearance, more conventional carburettor-type intake systems were employed, which handled the intake of air and fuel into the engine cylinders. With the injectors, manufacturers now have the ability, thanks to the injectors pump, to control electronically each stage of the intake process very accurately (quantity of fuel injected, air/fuel mixture) via the analysis of the data accumulated from the various sensors equipping the car (engine temperature, acceleration level, engine speed, etc.). Their goal is therefore to inject under high pressure a precise quantity of an air/fuel mixture at a perfect timing to get the best possible combustion in the cylinders.
The different causes of a clicking or knocking noise based on the injectors of your Volkswagen CC
Finding out injector noises on your Volkswagen CC may come from different locations, we will now look into the potential causes of these. In most cases, the common noise of a faulty injector is of the snap type. Here are the different origins of these noises and the solutions to be applied to get rid of them. If you hear another clicking noise but it is not from your injectors, we advise you to examine this article about clicking noise on Volkswagen CC to find the trigger.
The reasons for injector clicking or knocking noise Volkswagen CC
A clicking or knocking noise from your injectors can be explained for different reasons. Indeed, the injectors of your Volkswagen CC have three main tasks, to control the vaporisation of the fuel, i.e., to convert the liquid into “gas” during injection, to facilitate its combustion. Then, its objective is to control the air/fuel dosage and at last the homogeneity of the mixture, always with the target of improving combustion. If one of these three features is modified, the main purpose of the injectors will be disturbed and this will lead to poor combustion. This bad combustion will be a violent explosion in the cylinders resulting from bad timing, or a bad quantity of mixture or finally an inhomogeneous mixture and will provoke thoses knocking or clicking noises on your Volkswagen CC. The main trigger of these situations commonly comes from a particle that gets into the injectors. The accuracy of the injector being in the nanometer range, any possible obstruction will inevitably cause a malfunction of the injector. If after checking, this noise comes from another part of the engine of your Volkswagen CC, browse this article for more informations.
The end result of injector noise on Volkswagen CC
Now that we have reviewed the several causes for injector noise on your Volkswagen CC, we will end by stating the possible end result of malfunctioning one or more of your injectors. Whether only one is clogged, or broken, or your entire fuel rail is involved, you cannot escape these side effects which can almost instantly become severe….
First, you risk destroying your exhaust system in the long run, because the unburned fuel residues that will end up in your exhaust system can corrode the metal in it.
One of the most regular consequences experienced by drivers is a noticeable loss of power. Indeed, if your engine is running on 3 out of 4 cylinders for example, you will undoubtedly have a loss of power
Finally, you risk degrading one of your pistons or your engine. Poor combustion will almost instantly damage your cylinders or pistons and your engine may tighten.
Here are three little suggestions to limit the risks linked to your injectors and protect you from engine failure:
- Do not drive at the bottom of the tank, as you may absorb impurities
- Use quality fuel
- Think of swapping your diesel fuel filter regularly>
